Mixing ball



FIG. 1 is a front, left perspective view of a mixing ball;

FIG. 2 is a bottom, left perspective view of the mixing ball;

FIG. 3 is a top, right perspective view of the mixing ball;

FIG. 4 is a front plan view of the mixing ball;

FIG. 5 is a rear plan view of the mixing ball;

FIG. 6 is a left side plan view of the mixing ball;

FIG. 7 is a right side plan view of the mixing ball;

FIG. 8 is a top plan view of the mixing ball; and,

FIG. 9 is a bottom plan view of the mixing ball.

The dash-dash lines in the drawings depict portions of the mixing ball that form no part of the claimed design. The dot-dash-dot lines depict the boundaries of the claimed design and form no part thereof. 

CLAIM The ornamental design for a mixing ball, as shown and described. 